using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using BililiveRecorder.Core.Config;
using Newtonsoft.Json.Linq;
using NLog;
namespace BililiveRecorder.Core
{
public class BililiveAPI
{
private const string HTTP_HEADER_ACCEPT = "application/json, text/javascript, */*; q=0.01";
private const string HTTP_HEADER_REFERER = "https://live.bilibili.com/";
private const string DEFAULT_SERVER_HOST = "broadcastlv.chat.bilibili.com";
private const int DEFAULT_SERVER_PORT = 2243;
private static readonly Logger logger = LogManager.GetCurrentClassLogger();
private static readonly Random random = new Random();
private readonly ConfigV1 Config;
private readonly HttpClient danmakuhttpclient;
private HttpClient httpclient;
public BililiveAPI(ConfigV1 config)
{
Config = config;
Config.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == nameof(Config.Cookie))
{
ApplyCookieSettings(Config.Cookie);
}
};
httpclient = new HttpClient { Timeout = TimeSpan.FromSeconds(10) };
httpclient.DefaultRequestHeaders.Add("Accept", HTTP_HEADER_ACCEPT);
httpclient.DefaultRequestHeaders.Add("Referer", HTTP_HEADER_REFERER);
httpclient.DefaultRequestHeaders.Add("User-Agent", Utils.UserAgent);
danmakuhttpclient = new HttpClient { Timeout = TimeSpan.FromSeconds(10) };
danmakuhttpclient.DefaultRequestHeaders.Add("Accept", HTTP_HEADER_ACCEPT);
danmakuhttpclient.DefaultRequestHeaders.Add("Referer", HTTP_HEADER_REFERER);
danmakuhttpclient.DefaultRequestHeaders.Add("User-Agent", Utils.UserAgent);
}
public void ApplyCookieSettings(string cookie_string)
{
try
{
logger.Trace("设置 Cookie 信息...");
if (!string.IsNullOrWhiteSpace(cookie_string))
{
var pclient = new HttpClient(handler: new HttpClientHandler
{
UseCookies = false,
UseDefaultCredentials = false,
}, disposeHandler: true)
{
Timeout = TimeSpan.FromSeconds(5)
};
pclient.DefaultRequestHeaders.Add("Accept", HTTP_HEADER_ACCEPT);
pclient.DefaultRequestHeaders.Add("Referer", HTTP_HEADER_REFERER);
pclient.DefaultRequestHeaders.Add("User-Agent", Utils.UserAgent);
pclient.DefaultRequestHeaders.Add("Cookie", cookie_string);
httpclient = pclient;
}
else
{
var cleanclient = new HttpClient { Timeout = TimeSpan.FromSeconds(5) };
cleanclient.DefaultRequestHeaders.Add("Accept", HTTP_HEADER_ACCEPT);
cleanclient.DefaultRequestHeaders.Add("Referer", HTTP_HEADER_REFERER);
cleanclient.DefaultRequestHeaders.Add("User-Agent", Utils.UserAgent);
httpclient = cleanclient;
}
logger.Debug("设置 Cookie 成功");
}
catch (Exception ex)
{
logger.Error(ex, "设置 Cookie 时发生错误");
}
}
///
/// 下载json并解析
///
/// 下载路径
/// 数据
///
///
private async Task HttpGetJsonAsync(HttpClient client, string url)
{
try
{
var s = await client.GetStringAsync(url);
var j = JObject.Parse(s);
return j;
}
catch (TaskCanceledException)
{
return null;
}
}
///
/// 获取直播间播放地址
///
/// 原房间号
/// FLV播放地址
///
///
public async Task GetPlayUrlAsync(int roomid)
{
var url = $@"{Config.LiveApiHost}/room/v1/Room/playUrl?cid={roomid}&quality=4&platform=web";
// 随机选择一个 url
if ((await HttpGetJsonAsync(httpclient, url))?["data"]?["durl"] is JArray array)
{
var urls = array.Select(t => t?["url"]?.ToObject());
var distinct = urls.Distinct().ToArray();
if (distinct.Length > 0)
{
return distinct[random.Next(distinct.Length)];
}
}
throw new Exception("没有直播播放地址");
}
///
/// 获取直播间信息
///
/// 房间号（允许短号）
/// 直播间信息
///
///
public async Task GetRoomInfoAsync(int roomid)
{
try
{
var room = await HttpGetJsonAsync(httpclient, $@"https://api.live.bilibili.com/room/v1/Room/get_info?id={roomid}");
if (room?["code"]?.ToObject() != 0)
{
logger.Warn("不能获取 {roomid} 的信息1: {errormsg}", roomid, room?["message"]?.ToObject() ?? "网络超时");
return null;
}
var user = await HttpGetJsonAsync(httpclient, $@"https://api.live.bilibili.com/live_user/v1/UserInfo/get_anchor_in_room?roomid={roomid}");
if (user?["code"]?.ToObject() != 0)
{
logger.Warn("不能获取 {roomid} 的信息2: {errormsg}", roomid, user?["message"]?.ToObject() ?? "网络超时");
return null;
}
var i = new RoomInfo()
{
ShortRoomId = room?["data"]?["short_id"]?.ToObject() ?? throw new Exception("未获取到直播间信息"),
RoomId = room?["data"]?["room_id"]?.ToObject() ?? throw new Exception("未获取到直播间信息"),
IsStreaming = 1 == (room?["data"]?["live_status"]?.ToObject() ?? throw new Exception("未获取到直播间信息")),
UserName = user?["data"]?["info"]?["uname"]?.ToObject() ?? throw new Exception("未获取到直播间信息"),
Title = room?["data"]?["title"]?.ToObject() ?? throw new Exception("未获取到直播间信息")
};
return i;
}
catch (Exception ex)
{
logger.Warn(ex, "获取直播间 {roomid} 的信息时出错", roomid);
throw;
}
}
///
/// 获取弹幕连接信息
///
///
///
public async Task<(string token, string host, int port)> GetDanmuConf(int roomid)
{
try
{
var result = await HttpGetJsonAsync(danmakuhttpclient, $@"https://api.live.bilibili.com/room/v1/Danmu/getConf?room_id={roomid}&platform=pc&player=web");
if (result?["code"]?.ToObject() == 0)
{
var token = result?["data"]?["token"]?.ToObject() ?? string.Empty;
List<(string host, int port)> servers = new List<(string host, int port)>();
if (result?["data"]?["host_server_list"] is JArray host_server_list)
{
foreach (var host_server_jtoken in host_server_list)
if (host_server_jtoken is JObject host_server)
servers.Add((host_server["host"]?.ToObject(), host_server["port"]?.ToObject() ?? 0));
}
if (result?["data"]?["server_list"] is JArray server_list)
{
foreach (var server_jtoken in server_list)
if (server_jtoken is JObject server)
servers.Add((server["host"]?.ToObject(), server["port"]?.ToObject() ?? 0));
}
servers.RemoveAll(x => string.IsNullOrWhiteSpace(x.host) || x.port <= 0 || x.host == DEFAULT_SERVER_HOST);
if (servers.Count > 0)
{
var (host, port) = servers[random.Next(servers.Count)];
return (token, host, port);
}
else
{
return (token, DEFAULT_SERVER_HOST, DEFAULT_SERVER_PORT);
}
}
else
{
logger.Warn("获取直播间 {roomid} 的弹幕连接信息时返回了 {code}", roomid, result?["code"]?.ToObject());
return (string.Empty, DEFAULT_SERVER_HOST, DEFAULT_SERVER_PORT);
}
}
catch (Exception ex)
{
logger.Warn(ex, "获取直播间 {roomid} 的弹幕连接信息时出错", roomid);
return (string.Empty, DEFAULT_SERVER_HOST, DEFAULT_SERVER_PORT);
}
}
}
}